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PCM1808做为主模式的时候怎么用?是不是接一个主时钟给它,可以用有源晶振来作为输入时钟源?如果可以的话,这个晶振的频率需要选多少的?
采样率由MD0&MD1 pin 和提供的system clk共同决定.
举个例子,假设你想要44.1K的采用率,那么需要提供的system CLK由MD0和MD1来决定:
1. MD1 = Low, MD0 = High, System CLK = 512*fs = 22.5792M;
2. MD1 = High, MD0 = Low, System CLK = 384*fs = 16.9344M;
3. MD1 = High, MD0 = High, System CLK = 256*fs = 11.2896M;
Best Regards
Fabian Zhang